Description
Overview
The Flowmaster 50 Series HD Chambered Muffler is engineered primarily for today’s heavy duty gas and diesel trucks, delivering a smart balance of performance, drivability, and a refined exhaust note. Built around Flowmaster’s proven chambered technology, this HD muffler is designed to free up airflow so your engine breathes easier — helping improve performance, sharpen throttle response, and support better mileage on the trucks that work the hardest.
What sets the 50 Series HD apart is its tuning. It produces a deeper, moderate tone with minimal resonance, giving your rig a purposeful presence without the drone that makes long hauls tiresome. That character makes it an ideal match for trucks running modified engines, where you want the sound to reflect the added power without overwhelming the cab.
Built to Last
Durability is at the core of this muffler’s construction. The body is formed from 16 gauge aluminized steel and fully MIG welded, creating a rugged unit that stands up to the heat, vibration, and demands of heavy duty use. The high-temperature paint finish adds an extra measure of protection against the elements, helping the muffler hold up mile after mile.
Key Highlights
- 50 Series HD chambered design tuned for heavy duty gas and diesel trucks
- Deeper, moderate tone with minimal resonance — aggressive but livable
- 16 gauge aluminized steel body, fully MIG welded for maximum durability
- High-temperature paint finish for added heat and corrosion protection
- 3.00″ inlet with dual outlet configuration
- Universal fitment for flexible custom exhaust builds
- Emission code 5
Configuration & Fitment
This muffler features a 3.00″ inlet diameter and a dual outlet location, making it a versatile centerpiece for a custom exhaust build. Its universal fitment gives fabricators and enthusiasts the freedom to integrate it into a wide range of applications, particularly on modified diesel and gas trucks where flow and tone both matter.
Please note that the muffler uses new hangers, which are not included, so plan your installation hardware accordingly. Exhaust tips are also sold separately, allowing you to finish the system with the look you want. Pair this 50 Series HD muffler with the right piping, hangers, and tips to complete an exhaust setup tailored to your truck.
If you’re after a moderate-volume upgrade that backs up its sound with performance-minded airflow and heavy duty construction, the Flowmaster 50 Series HD Chambered Muffler delivers a well-rounded package for work trucks and modified rigs alike.






